Piazza, a Homework Help Site, Has a Social Networking Twist

When Pooja Nath was an undergraduate at the Indian Institute of Technology Kanpur, an elite engineering school in India, she felt isolated. She was one of the few women on campus. While her male classmates collaborated on problem sets, Ms. Nath toiled in the computer lab alone…The experience as a young woman in that culture formed the foundation of her start-up in Silicon Valley, Piazza.